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Printing Direct to Unheated Glass

Posted by N314 
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N314
Printing Direct to Unheated Glass
September 10, 2012 09:03PM
I have a glass build plate that i have blue tape on. The tape leaves a somewhat messy look to the bottom.

Are there any treatments you can give unheated glass? I dont want to add a heated build plate.

-Nick

EDIT: I am printing PLA at 188 degrees C

Edited 1 time(s). Last edit at 09/10/2012 09:05PM by N314.
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Polygonhell
Re: Printing Direct to Unheated Glass
September 10, 2012 09:07PM
You can try PVA glue diluted with water, but IME it's not sufficient to bond to unseated glass.
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N314
Re: Printing Direct to Unheated Glass
September 10, 2012 09:56PM
Where can one get PVA glue (in the US)?

-Nick
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baslisks
Re: Printing Direct to Unheated Glass
September 10, 2012 09:56PM
elmers glue is pva.
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NewPerfection
Re: Printing Direct to Unheated Glass
September 10, 2012 11:38PM
I've tried PVA glue on a cold bed and not had good luck. It makes PLA stick fantastically on a heated bed though.

Some people have had luck with it on a cold bed though, since it's so cheap it might be worth a try.

As mentioned, PVA glue is just plain white glue, such as Elmer's.

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Enlightx
Re: Printing Direct to Unheated Glass
September 11, 2012 12:26PM
yeah when using pva glue when its heated it becomes slighty tacky thats what makes the prints stick so good.

hence when you cool it it normally pops off quite good.
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bryanandaimee
Re: Printing Direct to Unheated Glass
September 11, 2012 12:32PM
I saw someone using hairspray. I think it was on a heated bed with Kapton, but it might be worth a shot.

Edit: Just found the link:

[www.thingiverse.com]

Edited 1 time(s). Last edit at 09/11/2012 12:33PM by bryanandaimee.
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Idolcrasher
Re: Printing Direct to Unheated Glass
September 11, 2012 02:18PM
I have heard of people simply using a blow dryer or hot lamp on the plate for a few minutes before starting the print.

Sounds simple enough, and I can imagine it may work.
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Idolcrasher
Re: Printing Direct to Unheated Glass
September 11, 2012 02:19PM
why not put down Kapton and heat it with a blow dryer?

get an $8 Kapton roll on ebay smiling smiley
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Idolcrasher
Re: Printing Direct to Unheated Glass
September 11, 2012 02:23PM
www.reprapdiscount.com Sells cheap hot beds.

They are Hong Kong based, and their stuff while not "Amazing Quality" has not failed to work for me yet.

Everything I have picked up from them so far has indeed functioned as advertised.

(it did take me a frustrating day to figure out their stepper drivers need a 0.1 volt reference voltage though)
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Polygonhell
Re: Printing Direct to Unheated Glass
September 11, 2012 03:03PM
Idolcrasher Wrote:
-------------------------------------------------------
> I have heard of people simply using a blow dryer
> or hot lamp on the plate for a few minutes before
> starting the print.
>
> Sounds simple enough, and I can imagine it may
> work.


The issue with that is as the bed cools during the print, there is a very good chance the print will detatch from the bed.
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N314
Re: Printing Direct to Unheated Glass
September 11, 2012 04:56PM
Ive tried hairspray. It was Dove somthing, idk if other kinds might work.

The reason I dont want to do a heat bed is mainly cost, time (Busy with school), and I would also need a new power supply.

-Nick
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Polygonhell
Re: Printing Direct to Unheated Glass
September 11, 2012 06:20PM
Then IMO you're pretty much stuck with Blue Tape
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N314
Re: Printing Direct to Unheated Glass
September 11, 2012 10:05PM
I do know there are a few varieties of blue tape, with different "Finishes". Is it the tape itself that makes the adhesion, or the semi-rough surface of it?

-Nick
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Idolcrasher
Re: Printing Direct to Unheated Glass
September 12, 2012 01:30AM
Polygonhell Wrote:
-------------------------------------------------------
> Idolcrasher Wrote:
> --------------------------------------------------
> -----
> > I have heard of people simply using a blow
> dryer
> > or hot lamp on the plate for a few minutes
> before
> > starting the print.
> >
> > Sounds simple enough, and I can imagine it may
> > work.
>
>
> The issue with that is as the bed cools during the
> print, there is a very good chance the print will
> detatch from the

Well, I would suggest using Blue Painters tape for that method.

The Chinese PLA i use, on blue painters tape will not come off even when you want it to winking smiley
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Idolcrasher
Re: Printing Direct to Unheated Glass
September 12, 2012 01:33AM
Idolcrasher Wrote:
-------------------------------------------------------
> why not put down Kapton and heat it with a blow
> dryer?
>
> get an $8 Kapton roll on ebay smiling smiley

Thiss has potential for the print to pop off the plate, poly was right. Lapse of judgement on my part.

Maybe it would be ok on a stationary bed design printer... But still risky, the nozzel could hit the print and it flys off the plate.
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printingray
Re: Printing Direct to Unheated Glass
September 12, 2012 03:38PM
You can try rubber ruler and compress as much surplus water as possible. Leave it to dray as it will take several hours deoebdubg on humanity in air.
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Simba
Re: Printing Direct to Unheated Glass
September 15, 2012 12:48AM
tape down the sides of a sheet of printer paper, and turn up the temp of the first layer +10-20 if needed.
I did it here [www.youtube.com]

Edit: Chinese PLA used here with great success : )

Edited 1 time(s). Last edit at 09/15/2012 12:49AM by Simba.
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